Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit f070ef2ac66716357066b683fb0baf55f8191a2e.
総合評価: CVE-2019-11478 は中リスク（61.1/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 94.69%、100 パーセンタイル） 根拠: EPSS 上、短期間での悪用可能性は高い水準です。 直近 1 日で EPSS が +64.93% 上昇。悪用への関心が高まっている可能性があります。 推奨対応: 悪用可能性が高いため、影響範囲の確認と修補の優先付けを推奨します。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 29.76% | 94.69% | +64.93% |
| 2 | 2026-04-03 | 30.13% | 29.76% | -0.37% |
| 3 | 2025-12-28 | — | 30.13% | — |
EPSS の全履歴 （全 37 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 5.3 | 3.0 | MEDIUM |
|
3.9 | 1.4 | [email protected] |
| 7.5 | 3.0 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2019-11478 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2019-11478 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2019-11478 |
suse
|
high | CVE-2019-11478 severity important: SUSE including 783 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 1159 product×package rows across 105 product lines (SUSE CaaS Platform 3.0, SUSE Enterprise Storage 4, … (105 product lines)): Fixed 968, Known Affected 157, Known Not Affected 34. | https://www.suse.com/security/cve/CVE-2019-11478/ |
ubuntu
|
high | CVE-2019-11478 high priority: Ubuntu including 92 source packages (linux, linux-aws, …), 856 status rows across 12 suites (bionic, cosmic, disco, eoan, focal, jammy, noble, oracular, plucky, trusty, upstream, xenial): DNE 570, released 139, not-affected 136, ignored 11. | https://ubuntu.com/security/CVE-2019-11478 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | < 4.4.182 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 4.5, < 4.9.182 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 4.10, < 4.14.127 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 4.15, < 4.19.52 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 4.20, < 5.1.11 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| f5 | big-ip_advanced_firewall_manager | >= 11.5.2, <= 11.6.4 | cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_advanced_firewall_manager | >= 12.1.0, <= 12.1.4 | cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_advanced_firewall_manager | >= 13.1.0, <= 13.1.1 | cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_advanced_firewall_manager | >= 14.0.0, <= 14.1.0 | cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_advanced_firewall_manager | 15.0.0 | cpe:2.3:a:f5:big-ip_advanced_firewall_manager:15.0.0:*:*:*:*:*:*:* |
| f5 | big-ip_access_policy_manager | >= 11.5.2, <= 11.6.4 | cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_access_policy_manager | >= 12.1.0, <= 12.1.4 | cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_access_policy_manager | >= 13.1.0, <= 13.1.1 | cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_access_policy_manager | >= 14.0.0, <= 14.1.0 | cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_access_policy_manager | 15.0.0 | cpe:2.3:a:f5:big-ip_access_policy_manager:15.0.0:*:*:*:*:*:*:* |
| f5 | big-ip_application_acceleration_manager | >= 11.5.2, <= 11.6.4 | cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_application_acceleration_manager | >= 12.1.0, <= 12.1.4 | cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_application_acceleration_manager | >= 13.1.0, <= 13.1.1 | cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_application_acceleration_manager | >= 14.0.0, <= 14.1.0 | cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_application_acceleration_manager | 15.0.0 | cpe:2.3:a:f5:big-ip_application_acceleration_manager:15.0.0:*:*:*:*:*:*:* |
| f5 | big-ip_link_controller | >= 11.5.2, <= 11.6.4 | cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* |
| f5 | big-ip_link_controller | >= 12.1.0, <= 12.1.4 | cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* |
| f5 | big-ip_link_controller | >= 13.1.0, <= 13.1.1 | cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* |
| f5 | big-ip_link_controller | >= 14.0.0, <= 14.1.0 | cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* |
| f5 | big-ip_link_controller | 15.0.0 | cpe:2.3:a:f5:big-ip_link_controller:15.0.0:*:*:*:*:*:*:* |
| f5 | big-ip_policy_enforcement_manager | >= 11.5.2, <= 11.6.4 | cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_policy_enforcement_manager | >= 12.1.0, <= 12.1.4 | cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_policy_enforcement_manager | >= 13.1.0, <= 13.1.1 | cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_policy_enforcement_manager | >= 14.0.0, <= 14.1.0 | cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_policy_enforcement_manager | 15.0.0 | cpe:2.3:a:f5:big-ip_policy_enforcement_manager:15.0.0:*:*:*:*:*:*:* |
| f5 | big-ip_webaccelerator | >= 11.5.2, <= 11.6.4 | cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* |
| f5 | big-ip_webaccelerator | >= 12.1.0, <= 12.1.4 | cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* |
| f5 | big-ip_webaccelerator | >= 13.1.0, <= 13.1.1 | cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* |
| f5 | big-ip_webaccelerator | >= 14.0.0, <= 14.1.0 | cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* |
| f5 | big-ip_webaccelerator | 15.0.0 | cpe:2.3:a:f5:big-ip_webaccelerator:15.0.0:*:*:*:*:*:*:* |
| f5 | big-ip_application_security_manager | >= 11.5.2, <= 11.6.4 | cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_application_security_manager | >= 12.1.0, <= 12.1.4 | cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_application_security_manager | >= 13.1.0, <= 13.1.1 | cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_application_security_manager | >= 14.0.0, <= 14.1.0 | cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_application_security_manager | 15.0.0 | cpe:2.3:a:f5:big-ip_application_security_manager:15.0.0:*:*:*:*:*:*:* |
| f5 | big-ip_local_traffic_manager | >= 11.5.2, <= 11.6.4 | cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_local_traffic_manager | >= 12.1.0, <= 12.1.4 | cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_local_traffic_manager | >= 13.1.0, <= 13.1.1 | cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_local_traffic_manager | >= 14.0.0, <= 14.1.0 | cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_local_traffic_manager | 15.0.0 | cpe:2.3:a:f5:big-ip_local_traffic_manager:15.0.0:*:*:*:*:*:*:* |
| f5 | big-ip_fraud_protection_service | >= 11.5.2, <= 11.6.4 | cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* |
| f5 | big-ip_fraud_protection_service | >= 12.1.0, <= 12.1.4 | cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* |
| f5 | big-ip_fraud_protection_service | >= 13.1.0, <= 13.1.1 | cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* |
| f5 | big-ip_fraud_protection_service | >= 14.0.0, <= 14.1.0 | cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* |
| f5 | big-ip_fraud_protection_service | 15.0.0 | cpe:2.3:a:f5:big-ip_fraud_protection_service:15.0.0:*:*:*:*:*:*:* |
| f5 | big-ip_global_traffic_manager | >= 11.5.2, <= 11.6.4 | cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_global_traffic_manager | >= 12.1.0, <= 12.1.4 | cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_global_traffic_manager | >= 13.1.0, <= 13.1.1 | cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_global_traffic_manager | >= 14.0.0, <= 14.1.0 | cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* |
| f5 | big-ip_global_traffic_manager | 15.0.0 | cpe:2.3:a:f5:big-ip_global_traffic_manager:15.0.0:*:*:*:*:*:*:* |
| f5 | big-ip_analytics | >= 11.5.2, <= 11.6.4 | cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* |
| f5 | big-ip_analytics | >= 12.1.0, <= 12.1.4 | cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* |
| f5 | big-ip_analytics | >= 13.1.0, <= 13.1.1 | cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* |
| f5 | big-ip_analytics | >= 14.0.0, <= 14.1.0 | cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* |
| f5 | big-ip_analytics | 15.0.0 | cpe:2.3:a:f5:big-ip_analytics:15.0.0:*:*:*:*:*:*:* |
| f5 | big-ip_edge_gateway | >= 11.5.2, <= 11.6.4 | cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* |
| f5 | big-ip_edge_gateway | >= 12.1.0, <= 12.1.4 | cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* |
| f5 | big-ip_edge_gateway | >= 13.1.0, <= 13.1.1 | cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* |
| f5 | big-ip_edge_gateway | >= 14.0.0, <= 14.1.0 | cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* |
| f5 | big-ip_edge_gateway | 15.0.0 | cpe:2.3:a:f5:big-ip_edge_gateway:15.0.0:*:*:*:*:*:*:* |
| f5 | big-ip_domain_name_system | >= 11.5.2, <= 11.6.4 | cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* |
| f5 | big-ip_domain_name_system | >= 12.1.0, <= 12.1.4 | cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* |
| f5 | big-ip_domain_name_system | >= 13.1.0, <= 13.1.1 | cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* |
| f5 | big-ip_domain_name_system | >= 14.0.0, <= 14.1.0 | cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* |
| f5 | big-ip_domain_name_system | 15.0.0 | cpe:2.3:a:f5:big-ip_domain_name_system:15.0.0:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 12.04 | cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* |
| canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* |
| canonical | ubuntu_linux | 16.04 | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 18.04 | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 18.10 | cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 19.04 | cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* |
| redhat | enterprise_linux_atomic_host | — | cpe:2.3:a:redhat:enterprise_linux_atomic_host:-:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 5.0 | cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 6.0 | cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 7.0 | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* |